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x265enc: add qp property

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QP property enables CQP mode and sets the QP for P slices.
This commit is contained in:
Jürgen Slowack 2014-12-01 12:14:20 +01:00 committed by Thijs Vermeir
parent 6215b5dd14
commit c89844ec1e
2 changed files with 25 additions and 2 deletions
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22
ext/x265/gstx265enc.c
View file

@ -48,6 +48,7 @@ enum
{
PROP_0,
PROP_BITRATE,
PROP_QP,
PROP_OPTION_STRING,
PROP_X265_LOG_LEVEL,
PROP_SPEED_PRESET,
@ -57,6 +58,7 @@ enum
static GString *x265enc_defaults;
#define PROP_BITRATE_DEFAULT (2 * 1024)
#define PROP_QP_DEFAULT -1
#define PROP_OPTION_STRING_DEFAULT ""
#define PROP_LOG_LEVEL_DEFAULT -1 // None
#define PROP_SPEED_PRESET_DEFAULT 6 // Medium
@ -371,6 +373,11 @@ gst_x265_enc_class_init (GstX265EncClass * klass)
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_QP,
g_param_spec_int ("qp", "Quantization parameter",
"QP for P slices in (implied) CQP mode (-1 = disabled)", -1,
51, PROP_QP_DEFAULT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_OPTION_STRING,
g_param_spec_string ("option-string", "Option string",
"String of x264 options (overridden by element properties)",
@ -416,6 +423,7 @@ gst_x265_enc_init (GstX265Enc * encoder)
encoder->push_header = TRUE;
encoder->bitrate = PROP_BITRATE_DEFAULT;
encoder->qp = PROP_QP_DEFAULT;
encoder->option_string_prop = g_string_new (PROP_OPTION_STRING_DEFAULT);
encoder->log_level = PROP_LOG_LEVEL_DEFAULT;
encoder->speed_preset = PROP_SPEED_PRESET_DEFAULT;
@ -653,8 +661,16 @@ gst_x265_enc_init_encoder (GstX265Enc * encoder)
encoder->x265param.vui.sarWidth = info->par_n;
encoder->x265param.vui.sarHeight = info->par_d;
}
if (encoder->qp != -1) {
/* CQP */
encoder->x265param.rc.qp = encoder->qp;
encoder->x265param.rc.rateControlMode = X265_RC_CQP;
} else {
/* ABR */
encoder->x265param.rc.bitrate = encoder->bitrate;
encoder->x265param.rc.rateControlMode = X265_RC_ABR;
}
/* apply option-string property */
if (encoder->option_string_prop && encoder->option_string_prop->len) {
@ -1157,6 +1173,9 @@ gst_x265_enc_set_property (GObject * object, guint prop_id,
case PROP_BITRATE:
encoder->bitrate = g_value_get_uint (value);
break;
case PROP_QP:
encoder->qp = g_value_get_int (value);
break;
case PROP_OPTION_STRING:
g_string_assign (encoder->option_string_prop, g_value_get_string (value));
break;
@ -1198,6 +1217,9 @@ gst_x265_enc_get_property (GObject * object, guint prop_id,
case PROP_BITRATE:
g_value_set_uint (value, encoder->bitrate);
break;
case PROP_QP:
g_value_set_int (value, encoder->qp);
break;
case PROP_OPTION_STRING:
g_value_set_string (value, encoder->option_string_prop->str);
break;

1
ext/x265/gstx265enc.h
View file

@ -58,6 +58,7 @@ struct _GstX265Enc
/* properties */
guint bitrate;
gint qp;
gint log_level;
gint tune;
gint speed_preset;